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Finding the Fourth Proportional to 80,585.76, 120,836.93 and 36,174.27

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Solution

The fourth proportional to 80,585.76, 120,836.93 and 36,174.27 is: 54,242.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,585.76 : 120,836.93 = 36,174.27 : x
  2. Step 2: Convert to fraction form
    80,585.76/120,836.93 = 36,174.27/x
  3. Step 3: Cross multiply
    80,585.76x = 120,836.93 × 36,174.27
  4. Step 4: Simplify right side
    80,585.76x = 4,371,187,731.79
  5. Step 5: Solve for x
    x = 4,371,187,731.79/80,585.76
  6. Step 6: Final answer
    x = 54,242.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.